Definitely agree--let the kids' play dictate the crowd along with having the band be involved.
The announcer is there to give information, not to be a cheerleader. This isn't college or the pros where the marketing group has the PA person under their wing.
He did so much for BHS and built up the program to the point where we won 10 consecutive conference titles, ranked first in the state (albeit pre-season) as well as created our statistical recordholders where they were none before his tenure.